Petrogenesis of Granites from Fanchang District, the Lower Yangtze Region: Zircon Geochronology and Hf-O Isotopes Constrains
详细信息
- 责任者：Yan Jun (School of Resource and Environmental Engineering ; Hefei University of Technology ; Hefei 230009 ; China) ; Peng Ge
- 刊名：Acta Petrologica Sinica
- 出版年：2012
- 卷期：28(10)
- 关键词：花岗岩 ; granite ; 铀—铅计时 ; U-Pb dating ; 扬子地区 ; Yangtze Region
- 页码：p.3209-3227
- 图表：illus., 4 tables, 61 refs.
- 分类号：0801
- issnNo：ISSN1000-0569
- isbnNo：CN11-1922/P
摘要
Three relatively large intrusions locating in Fanchang district,the Lower Yangtze region,are Banshiling,Fushan and Binjiang plutons,rock types of which are dominantly quartz-monzonite,potassium feldspar granite and granite,respectively.Zircon LA-ICPMS U-Pb dating of three intrusions give quite accordant ages of (124.9±1.7) Ma, (126.4±1.7) Ma,(124.6±4.7) Ma (the coarse-grained phase of Binjiang pluton) and (123.0±1.8) Ma (the fine-grained phase of Binjiang pluton),respectively. The petrogenesis and magmatic source of the three stage magmatism in the Lower Yangtze region reveal a clearly deep geological process of evolution under an extension setting with increasing intensity during three magmatic stages.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |